Anchor



Sept? 1952 T. R. GARDINER 2,610,601

ANCHOR Filed Nov. 4, 1946 INVENTOQ. 7770/2705 ,8 fiordmer Patented Sept.16, 1952 if j Tho'mas flie'ncnon a V R." Gardiner, Piedmont, Calif.

Artistes-mama, 4, 194s;sria1 No. 707,556

The present invention relatesto anchorsl'and more particularly toanchors efuthe'twin fluke type. The present invention is an improvementin part over my prior patent for Stop Device For I Anchor ShanksgrantedAugust 30, 1949.

An objectof the invention is to'provide a twin fluke anchor of strongandsturdyconst'ruction having greater holding power for its'size."

A further object of the-invention is to provide a twin flukeanchorhaving an improved pivot for the shank of the anchor, so arrangedas to increase the strength of the anchor and hold the twin flukes inproper spaced relation.

Another object of the invention resides in the provision of an improvedcrown for a twin fluke anchor which furnishes a" relatively long bearingstop for the shank and accurately determines the fluke angle between theplane of the fluke blades and the shank axis. r

Still a further object of the-invention is to provide a crown fora twin'fiuke anchor which is so shaped and arranged with respect to the shank'pivot and the'center of area of the fluke blades as to offer verylittle resistance to burial of the blades, and to produce an initialdownward'and forward tilt of the blades on the bottom .or ground whichwill insure positive burial of'the' blades upon the exertion of vsuflicient pulling ,Jforce on the shank.

, Several forms which the invention may assume are exemplified in thefollowing description and illustrated by way of. example intheaccompanying drawings, inwhlch: y Fig. 1 is atop plan view of one formof twin fluke anchor embodying the invention.

Fig. 2 is a longitudinal section taken generally alongthe line 2-2 ofFig. l."

Fig. 3 is a partial cross-section taken generally snag, the line 3-3 ofFig. l.

r flanges or arms" 15 integral with blades ll, said armprojecting fromthe top and bottom faces ofthe blades. If desired, the-flanges or armsl5 may prcjectfrom only one face. Flanges or arms l5 are integrallyjoined to one another-by a U- 5 Claims. (01. 114-208) shaped member l6whose arms" extend between the rear blade tabs l8 and 1-9, and whosebase 20 holds the arms in spaced relation. 1

The arms I! of the U-shaped member l6 are generally parallel to oneanother but as shown the flanges l5 themselves diverge slightly in aforward direction beginning from the points of attachment [5a orintegration of the flangeswith the blades themselves. The divergentflange portions [5 are bevelled, tapering towards the blade faces in aforward direction, with their front ends merging into the blades in theregion of the rounded ends or corners 12.

A pivot pin 2| extends through aligned holes 22 in the parallel flangearms II, the ends of the pin being slotted to fit snugly over the reartabs I8, [9 on the blades. It is to be noted that the inner edges 23 ofthe tabs are spaced from the arms I! to permit placing of the holes inthe plane of the blades ll. One slot 24 of the pivot pin issubstantially longer than the other slot 25, to permit its assembly inthe manner to be described hereinafter. The pin 2| is suitably secured,as by welding, to the blade tabs l8, I'9. A shank 26 is mounted on thepivot pin 2| and has a hole 21, or some other suitable means, at itsforward end for the attachment of a cable (not shown). This shank isswingable in a plane at right angles to the plane of the blades I Ibetween predetermined limits. A stop for the shank is provided by agenerally diamond-shaped crown 28. As shown in the drawings, the crownmay be made of one piece, bent to fit over the-top and bottom faces-ofthe flukes ID with a rear fold 29 integrating the rear sides 30 of thecrown. The

' forward sides 3| of the crownare bifurcated to flukes ID in anysuitable manner, as by welding with either rear side 30 of the crown.=This angle 'may be accurately fixed since the shank makes a the shank2E, and through the other arm i! blades l l.

relatively long bearing contact with each rearward side of the crown, asis evident from Fig. 2. It is to be noted that this angle is the same asthe angle of inclination of the rear crown sides to the plane of thefiukes.

It is also to be noted that the top and bottom pivot points 34, wherethe forward and rear sides 30, 3| of the crown merge, and which may reston the ground, are forward of the pivot pin 2!,

and between the pivot pin and the center of area of the flukes Hi. Thisarrangement insures an initial forward and downward tilt of the flukeblades H against the ground, in order that the pull taken on the shank26 will increase the...

angle of tilt of the blades to the ground and cause them to dig in andbury themselves to overboard; Moreover, the relatively large width withrespect to the length provides a large fluke area to give the anchorgreater holding power.

.It may also be pointed out that the increase of the width with respectto the length of the blades brings the center of the fluke blade areacloser to the maximum extent. Thusthe, diamondshape of the crown notonly provides such initial forward tilt, but also provides a stop forthe shank 26. The fact that the merging point or line 34 between theforward and rearward sides 30, 31 of the crown is relatively narrowinsures that the initial pivoting or tilt of theblades will, occur andalso insures the maximum burial of the blades since the crown offersvery little resistance to such burial.

It has been pointed out above that one of the pin slots 25 issubstantially longer than the other pinslot 2 3 to facilitate assemblyof the device.

Whensuch assembly tai-ies place, one of the rear tabs l 8 of the flukeblades is bentfrom its normal plane to permit insertion of the pin 21through the hole 22 in one arm ill of the flange, through of the flange,placing the long slot 25 over the opposing tab Is on the other flukeblade.v The extended length of this slot i9 permits the pin to be movedinwardly until the other short slotted end of the pin'isfreeof the planeof movement of the inner edge'23 of the tab 53. Ihe tab ifs may then bebent back to its initial position coincident with the plane of the flukeblade, where- V the point of pivoting of the shank on the pin 2| or Zia,making the anchor much stronger since upon the pin 2 i may be slidbackto positionthe short slot 24 over the repositioned tab 18. Thereafter,the pin may be secured, as by welding, to both tabs, offering supportfor the tabs and also insuring the appropriate spacing of the fluke Thepin 2! assists in resisting any tendency for the flukes ill to alter theangle of divergence between the flanges i5.

, In the embodiment of invention disclosed in Fig. 4,, the fluke bladesl i are separate from one another, in view of the omission of theU-shaped rearward. flange portion i6 shown in 1.. The blades are held inproper divergentposition and V in proper spaced relation by the pin Etaitself,

whose slots may be of equal length, since it can be assembled in placewithout difficulty. Following its insertion through the flange arms lidand shank 28, and with the proper position of its slotted ends over therear tabs '58, is of the blades, 'the-pin Zia. be securely welded to thetabs. In'addition, the blades i may be held against movement withrespect to one another by the welding of the crown fold 2d to the tabs.

In the form of invention illustrated in Fig. 5, the rear sides Sta ofthe crown merge smoothly into the back 29a of the crown, which isdisposed over the base Elia of the flange. The pivot 2i and the rear endof the shank 2e are disposed adjacent the base zoo in order that anextended surface contact may still be obtained between the top andbottom of the shank and the rear sides 36a of the crown. This design anddisposition of the crown 28, shank 26' and pin 21 obviate the :fiukeslying generally in a common plane and there is less tendency for theblades H to bend as they are pulled into the ground by the pulling forceexerted on the shank 28. 7

It is, therefore, apparent that a strong and sturdy anchor of relativelygreat holding power for its size has been'providedi The crownarrangement not, only provides for the initial tilt of the blades intothe ground, but also predetermines thefluke angle between the shank 2Sand the blades H by engagement of the shank with one side 35 of thecrown 23.

While ihave shown preferred forms of my invention, it is to beunderstood that various changes may be made in their construction bythose skilled in the art without departing from the spirit of tl' einvention as defined in the appended Claimed V Having thus described myinvention, what I claim anddesire to secure by Letters Patent is: 1 Ananchor comprising a pair of fluke blades lying generally in a commonplane, a pair of arms at the rear of saidblad'es integral with eachother and with said blades, a pin extending through. saidarms and havingslotted ends fitting over said blades andsecured' thereto, the slot inone pin endbeing substantially longer than the slot in the other end,and a shank pivotally mounted on said pin between said arms and blades;

2; In an. anchor of the type comprising spaced flukes lying generally ina common plane and a shank pivotally mounted therebetween adjacent therear edges ofthe flukes'for movement in a plane perpendicular to theplane of the flukes, the improvement which comprises a crownconstituting a separate element from the ilukes and shank but fixed tothe fiukes, said crown being of generally diamond shape, having a baseportion embracing the rear edges of the flukes and having legs extendingforwardly from the base portion on opposite sides of the flukes and insymmetrical relation thereto, said legs constituting a combinedstopmember for the shank and a brace or reinforcement member for the fiukes,and comprising, rear portions diverging forwardly from the base portionto provide said stop member and front portions converging forwardly fromthe rear portions and terminating at their forward ends adjacent thenukes saidfront portions being bifurcated to allow passage of the shank.

In: an anchor of the type comprising spaced a shank pivotally mountedtherebetween adjacent the rear edges of theflukes for movement in aplane perpendicular to the plane of the nukes-the improvement whichcomprises a con- 5 tinuous, U-shaped flange fixed to and disposed alongadjacent edges of the flukes and having a base at the rear edges of saidfiukes, and a crown constituting a separate element from the flukes andshank but fixed to the fiukes, said crown being of generally diamondshape, having a base portion which embraces the rear edges of the fiukesand is bifurcated to allow passage of the base of said flange and havinglegs extending forwardly from the base portion on opposite sides of theflukes and in symmetrical relation thereto, said legs constituting acombined stop member for the shank and a brace or reinforcement memberfor the flukes, and comprising rear portions diverging forwardly fromthe base portion to provide said stop member and front portionsconvergingforwardly from the rear portions and terminating at theirforward ends adjacent the flukes, said front portions being bifurcatedto allow passage of the shank.

4. In an anchor of the type comprising spaced fiukes lying generally ina common plane and a shank pivotally mounted therebetween adjacent therear edges of the flukes for movement in a plane perpendicular to theplane of I the fiukes, the improvement which comprises flange membersfixed to and lying along adjacent edges of the flukes, a pivot pinpassing through said flanges at the rear end thereof and mounting saidshank, and a crown constituting a separateelement from the fiukes andshankbut fixed to the flukes, said crown being of generally diamondshape, having a base portion embracing the rear edges of the flukes andhaving legs extending forwardly from the base portion on opposite sidesof the flukes and in symmetrical relation thereto; said legsconstituting a combined stop member for the shank and a brace orreinforcement member for the flukes, and comprising rear portionsdiverging forwardly from. the base portion to provide said stop memberand front portions converging forwardly from the rear portions andterminatingat their forward ends adjacent the flukes, said frontportions being bifurcated to allow passage of the shank.

5. An anchor comprising: a pair of fluke blades lying generally in acommon plane and, being laterally spaced from each other; spaced armssecured to the inner edges of said blades and being joined to oneanother at one pair of ends; a pin extending through said arms adjacentthe juncture thereof; the ends of said pin being slotted and receivingand being secured to the ends of the blades adjacent the juncture of thearms; and a shank pivotally mounted on said pin between-said arms andblades.

THOMAS R. GARDINER.

REFERENCES CITED The following references are of record in the file ofthis patent: Y

UNITED STATES PATENTS Number Name Date 669,016 Shaw Feb. 26, 19012,249,546 Danforth July 15, 19 41 2,279,302 Craig Apr. 14, 1942 FOREIGNPATENTS Number Country Date 8,387 -Great Britain May 15, 1891 14,922Great Britain Aug. 21, 1900 610,779 Germany Mar. 22, 1935

